You are in luck though. Powdery mildew is preventable and improved yet, treatable. Selected types of plants will basically invite or raise the chances of your veggies in getting powdery mildew. Such consist of members of the phlox or bee balm families. Should you have these plants near your vegetable garden it truly is finest to move them elsewhere or get rid of them altogether. Ask your self this question. Does your garden have sufficient drainage? If not then this could lead to improper movement of water underneath the soil and that could lead to powdery mildew as well as other diseases for instance root rot. The top way to build much better drainage would be to constantly add compost for your soil. Compost has shown in numerous studies to boost soil volume and drainage and also providing the numerous nutrients your plants must grow.